body,
html,
pre {
  line-height: 1;
  font-weight: 200;
  font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
}
.clearfix {
  display: inline-block;
}
.clearfix:after {
  display: block;
  content: ".";
  height: 0;
  line-height: 0;
  clear: both;
  visibility: hidden;
}
@media (-webkit-min-device-pixel-ratio: 1.5), (min-device-pixel-ratio: 1.5) {
  .border-1px::after {
    -webkit-transform: scaleY(0.7);
    transform: scaleY(0.7);
  }
}
@media (-webkit-min-device-pixel-ratio: 2), (min-device-pixel-ratio: 2) {
  .border-1px::after {
    -webkit-transform: scaleY(0.5);
    transform: scaleY(0.5);
  }
}
